Large Mode Area Photonic Crystal Fiber with Low Dispersion and Confinement Loss for Terahertz Wave Guiding

Chao Liu; Liying Wang; Jianwei Wang; Sinuo An; Famei  Wang; Xianli Li; Wei Liu; Weiquan Su; Qiang Liu; Haiwei Mu; Tao Sun; Paul K.  Chu

doi:10.37256/aecm.122020321

Authors

Chao Liu School of Electronics Science, Northeast Petroleum University, Daqing 163318, P. R. China
Liying Wang School of Electronics Science, Northeast Petroleum University, Daqing 163318, P. R. China
Jianwei Wang School of Electronics Science, Northeast Petroleum University, Daqing 163318, P. R. China
Sinuo An School of Electronics Science, Northeast Petroleum University, Daqing 163318, P. R. China
Famei Wang School of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
Xianli Li School of Electronics Science, Northeast Petroleum University, Daqing 163318, P. R. China
Wei Liu School of Electronics Science, Northeast Petroleum University, Daqing 163318, P. R. China
Weiquan Su School of Electronics Science, Northeast Petroleum University, Daqing 163318, P. R. China
Qiang Liu School of Electronics Science, Northeast Petroleum University, Daqing 163318, P. R. China
Haiwei Mu School of Electronics Science, Northeast Petroleum University, Daqing 163318, P. R. China
Tao Sun Media Lab, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Paul K. Chu Department of Physics and Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China

DOI:

https://doi.org/10.37256/aecm.122020321

Keywords:

photonic crystal fiber, low confinement loss, large mode area, terahertz

Abstract

A photonic crystal fiber (PCF) made of the cyclic-olefin copolymer (COC) with low dispersion and confinement loss, large-mode-area, and single-mode transmission for terahertz wave guiding is described. The characteristics of the PCF in the terahertz range are simulated and analyzed by the full-vector finite element method (FEM). The effects of the structural parameters on the performance of the terahertz PCF are also investigated. The effective mode field area of the PCF is as large as 1.22084 × 10⁷ μm² at a wavelength of 1,000 μm and a flat dispersion of 0.07669 ± 0.33258 ps/nm/km is obtained. A much lower confinement loss of 6.0253 × 10^-16 dB/m is achieved. The single mode transmission over the entire terahertz wave band is described.

Large Mode Area Photonic Crystal Fiber with Low Dispersion and Confinement Loss for Terahertz Wave Guiding

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